/Engine/Source/Developer/TextureBuildUtilities/Public/TextureBuildUtilities.h
Carries information out of the build that we don't want to cook or save off in the runtime.
struct FTextureBuildMetadata
bool
bSourceMipsAlphaDetected
Whether or not the first mip level of the source has alpha detected.
uint64
PreEncodeMipsHash
Digests of the data at various processing stages so we can track down determinism issues that arise.